WIDGET_BASE - Creates base widget (containers for other widgets).
WIDGET_BUTTON - Creates button widgets.
WIDGET_COMBOBOX - Creates editable droplist widgets.
WIDGET_CONTROL - Realizes, manages, and destroys widgets.
WIDGET_DISPLAYCONTEXTMENU - Displays a context-sensitive menu.
WIDGET_DRAW - Creates drawable widgets.
WIDGET_DROPLIST - Creates droplist widgets.
WIDGET_EVENT - Returns events for the widget hierarchy.
WIDGET_INFO - Obtains information about widgets.
WIDGET_LABEL - Creates label widgets.
WIDGET_LIST - Creates list widgets.
WIDGET_PROPERTYSHEET - Creates a property sheet widget, which exposes the properties of an IDL object in a graphical interface. This widget transparently handles property value changes.
WIDGET_SLIDER - Creates slider widgets.
WIDGET_TAB - Creates tab widgets.
WIDGET_TABLE - Creates table widgets.
WIDGET_TEXT - Creates text widgets.
WIDGET_TREE - Creates tree widgets.
WIDGET_TREE_MOVE - Copies and moves tree widget nodes from one tree to another or within the same tree.
WIDGET_WINDOW - Creates a drawable graphics widget to use with PLOT, IMAGE, CONTOUR, and so on.
XMANAGER - Provides event loop manager for IDL widgets.
XMNG_TMPL - Template for creating widgets.
XMTOOL - Displays tool for viewing XMANAGER widgets.
XREGISTERED - Returns registration status of a given widget.